15105655650 has 24 divisors (see below), whose sum is σ = 37462026384. Its totient is φ = 4028174800.

The previous prime is 15105655637. The next prime is 15105655661. The reversal of 15105655650 is 5655650151.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15105655599 and 15105655608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50352036 + ... + 50352335.

It is an arithmetic number, because the mean of its divisors is an integer number (1560917766).

Almost surely, 2^15105655650 is an apocalyptic number.

15105655650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15105655650 is an abundant number, since it is smaller than the sum of its proper divisors (22356370734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15105655650 is a wasteful number, since it uses less digits than its factorization.

15105655650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100704386 (or 100704381 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 15105655650 in words is "fifteen billion, one hundred five million, six hundred fifty-five thousand, six hundred fifty".